EMY1441HL Eudyna Devices Inc, EMY1441HL Datasheet - Page 11

• Manufacturer Part Number: EMY1441HL
• Description: 11.3 Gb/s Direct Modulation Driver Ic For +3.3v Supplied Voltage
• Manufacturer: Eudyna Devices Inc

EMY1441HI Datasheet Rev1.1
9.5. Power Supply Sequence
gener ate the voltage within the absolute maximum r atings for each pin.
9.6. Modulation Cur r ent Monitor ing
modulation cur r ent, IP, as a voltage dr op acr oss R
between V
9.7. Bias Cur r ent Monitor ing
modulation cur r ent, IB, as a voltage dr op acr oss R
9.8. Power Dissipation
shown in Figur e 9-2 and voltage swing at input, V
9.9. Ther mal Design
tr ansfer path (Ex. ther mal VIA) fr om the heat sink to module base plate or outside of the system should be taken to
keep the IC case temper atur e, T
r eliability.
It is r ecommended to follow the power supply sequence to avoid damaging the IC.
Such car e may not be necessar y when the contr ol cir cuit for V
Ther e is a r esistor , R
The modulation cur r ent includes the cur r ent thr ough back ter mination r esistor and LD. The r elationship
Ther e is a r esistor , R
Power dissipation of EMY1441HI can be estimated with the equations fr om 9-4a to 9-4f, with cur r ent flow
The EMY1441HI die is attached to the heat sink at the bottom of the package (face up). Pr oper design of heat
1. Set V
2. Adjust V
3. Retur n V
P
P
P
P
P
P
IMOD
D
IN
DD
IP
IB
OUT
IP
IP
IP
IB
DUTY
LD
BT
and I
IP
DUTY
= IP
= IP• R
= IP• R
= V
= P
= 0.5 V
= V
= V
= V
= IP
, V
, V
IP
IP
IN
IBMON
DD
TT
TT
is shown in Figur e 10-13.
IB
BT
, V
LD
, V
+ P
and V
• IP
• IB
• I
BT
LD
IP
IB
2
+ IP
IP
IN
IB
• R
DD
, V
(1ohm Typ.) between IP
DD
(1ohm Typ.) between IB
2
/ (R
/ R
and V
/ (R
LD
/ R
LD
IB
+ P
DUTY
IB
LD
C
+ IB
LD
I
and V
, within the r ecommended oper ating conditions for nor mal oper ation and long ter m
IP
+ R
SD
+ R
for desir ed output wavefor ms.
+ P
2
to gr ound, incr ease or tur n on V
= V
= V
= V
• R
BT
SD
BT
IB
)
)
LD
to gr ound, then decr ease or tur n off V
– P
IPMON
IBMON
IN
2
OUT
/100
/ R
IN
IB
IP
IP
, and output, V
. The r elationship between I
MON
.
MON
pin and gr ound of in EMY1441HI for monitor ing total
pin and gr ound of in EMY1441HI for monitor ing
= V
- 11 -
IPMON
OUT
DUTY
.
DD
, V
, then V
IP
, V
IB
TT
TT
, and V
B
, then V
.
and V
(9-1a)
(9-1b)
(9-1c)
SD
IB
DD
ar e designed pr oper ly to
is shown in Figur e 10-14.
.
Eudyna Device Inc.
(9-2)
(9-4a)
(9-4b)
(9-4c)
(9-4d)
(9-4e)
J anuary,2006
(9-4f)
No:ECM-A00-218